1685946474 has 40 divisors (see below), whose sum is σ = 3999997188. Its totient is φ = 528923520.

The previous prime is 1685946469. The next prime is 1685946497. The reversal of 1685946474 is 4746495861.

1685946474 is a `hidden beast` number, since 1 + 6 + 8 + 594 + 6 + 47 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1543311225 + 142635249 = 39285^2 + 11943^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1685946474.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 303337 + ... + 308844.

Almost surely, 2^1685946474 is an apocalyptic number.

1685946474 is an abundant number, since it is smaller than the sum of its proper divisors (2314050714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685946474 is a wasteful number, since it uses less digits than its factorization.

1685946474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612212 (or 612203 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 1685946474 is about 41060.2785426500. The cubic root of 1685946474 is about 1190.1853332791.

The spelling of 1685946474 in words is "one billion, six hundred eighty-five million, nine hundred forty-six thousand, four hundred seventy-four".